Buildresult: powerpc-next/i386-allnoconfig/i386-gcc4.6 built on Mar 25 2020, 12:14

kisskb

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Status:	OK
Date/Time:	Mar 25 2020, 12:14
Duration:	0:02:44.322565
Builder:	ka2
Revision:	powerpc/kprobes: Ignore traps that happened in real mode (`21f8b2fa3ca5b01f7a2b51b89ce97a3705a15aa0)`
Target:	powerpc-next/i386-allnoconfig/i386-gcc4.6
Branch:	powerpc-next
Compiler:	i386-gcc4.6 (i386-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	allnoconfig (download)
Log:	Download original Possible warnings (2) kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] arch/x86/kernel/e820.c:665:16: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized] Full Log # git gc # git rev-parse -q --verify 21f8b2fa3ca5b01f7a2b51b89ce97a3705a15aa0^{commit} # git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git next-test # git rev-parse -q --verify 21f8b2fa3ca5b01f7a2b51b89ce97a3705a15aa0^{commit} 21f8b2fa3ca5b01f7a2b51b89ce97a3705a15aa0 # git checkout -q -f -B kisskb 21f8b2fa3ca5b01f7a2b51b89ce97a3705a15aa0 # git clean -qxdf # < git log -1 # commit 21f8b2fa3ca5b01f7a2b51b89ce97a3705a15aa0 # Author: Christophe Leroy <christophe.leroy@c-s.fr> # Date: Tue Feb 18 19:38:27 2020 +0000 # # powerpc/kprobes: Ignore traps that happened in real mode # # When a program check exception happens while MMU translation is # disabled, following Oops happens in kprobe_handler() in the following # code: # # } else if (*addr != BREAKPOINT_INSTRUCTION) { # # BUG: Unable to handle kernel data access on read at 0x0000e268 # Faulting instruction address: 0xc000ec34 # Oops: Kernel access of bad area, sig: 11 [#1] # BE PAGE_SIZE=16K PREEMPT CMPC885 # Modules linked in: # CPU: 0 PID: 429 Comm: cat Not tainted 5.6.0-rc1-s3k-dev-00824-g84195dc6c58a #3267 # NIP: c000ec34 LR: c000ecd8 CTR: c019cab8 # REGS: ca4d3b58 TRAP: 0300 Not tainted (5.6.0-rc1-s3k-dev-00824-g84195dc6c58a) # MSR: 00001032 <ME,IR,DR,RI> CR: 2a4d3c52 XER: 00000000 # DAR: 0000e268 DSISR: c0000000 # GPR00: c000b09c ca4d3c10 c66d0620 00000000 ca4d3c60 00000000 00009032 00000000 # GPR08: 00020000 00000000 c087de44 c000afe0 c66d0ad0 100d3dd6 fffffff3 00000000 # GPR16: 00000000 00000041 00000000 ca4d3d70 00000000 00000000 0000416d 00000000 # GPR24: 00000004 c53b6128 00000000 0000e268 00000000 c07c0000 c07bb6fc ca4d3c60 # NIP [c000ec34] kprobe_handler+0x128/0x290 # LR [c000ecd8] kprobe_handler+0x1cc/0x290 # Call Trace: # [ca4d3c30] [c000b09c] program_check_exception+0xbc/0x6fc # [ca4d3c50] [c000e43c] ret_from_except_full+0x0/0x4 # --- interrupt: 700 at 0xe268 # Instruction dump: # 913e0008 81220000 38600001 3929ffff 91220000 80010024 bb410008 7c0803a6 # 38210020 4e800020 38600000 4e800020 <813b0000> 6d2a7fe0 2f8a0008 419e0154 # ---[ end trace 5b9152d4cdadd06d ]--- # # kprobe is not prepared to handle events in real mode and functions # running in real mode should have been blacklisted, so kprobe_handler() # can safely bail out telling 'this trap is not mine' for any trap that # happened while in real-mode. # # If the trap happened with MSR_IR or MSR_DR cleared, return 0 # immediately. # # Reported-by: Larry Finger <Larry.Finger@lwfinger.net> # Fixes: 6cc89bad60a6 ("powerpc/kprobes: Invoke handlers directly") # Cc: stable@vger.kernel.org # v4.10+ # Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> # Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org> # Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://lore.kernel.org/r/424331e2006e7291a1bfe40e7f3fa58825f565e1.1582054578.git.christophe.leroy@c-s.fr # < /opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux-ld --version # < git log --format=%s --max-count=1 21f8b2fa3ca5b01f7a2b51b89ce97a3705a15aa0 # < make -s -j 8 ARCH=i386 O=/kisskb/build/powerpc-next_i386-allnoconfig_i386-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux- allnoconfig # < make -s -j 8 ARCH=i386 O=/kisskb/build/powerpc-next_i386-allnoconfig_i386-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux- help # make -s -j 8 ARCH=i386 O=/kisskb/build/powerpc-next_i386-allnoconfig_i386-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux- olddefconfig # make -s -j 8 ARCH=i386 O=/kisskb/build/powerpc-next_i386-allnoconfig_i386-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux- /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/arch/x86/kernel/e820.c: In function 'e820__setup_pci_gap': /kisskb/src/arch/x86/kernel/e820.c:665:16: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized] Completed OK # rm -rf /kisskb/build/powerpc-next_i386-allnoconfig_i386-gcc4.6 # Build took: 0:02:44.322565

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